Greywater Recycling
Greywater is usually defined as used water from basins, baths and showers. Sometimes the definition includes water from the kitchen sink, dishwasher and washing machine but water from these sources contains much higher levels of bacteria, grease and solids.
Greywater can usually be treated with membrane filters and use of expensive rotating mechanical equipment is avoided. Filtered and treated water can then be used for toilet flushing and irrigation purposes.
Ideal applications for greywater recycling are hotels or high rise buildings with only a relatively small roof area. Only the volume of greywater produced in the building can be recycled so the viability of the project must be considered carefully.
The benefits are usually greater for commercial buildings, especially care homes and hotels. Greywater can replace up to 30% of mains water applications but is not commonly used in single private homes. The cost of equipment is higher than rainwater systems and maintenance must be adhered to. Larger scale commercial buildings can offer a commercial return if the supply and demand of greywater are high and in balance. BS8525 for greywater systems is currently under development by BSI and the UK rainwater harvesting association.
Ecozi can offer standalone greywater systems or combined grey and rainwater systems. The main difference from rainwater and greywater systems is the filtration equipment. The same Ecozi leading technology is already used in our rainwater systems such as: advanced tank materials for low cost installation, factories built non-potable water distribution controllers and integrated pump sets, are all part of a greywater system.
